This is a really small, loud whistle.. it has 2 tones and is light enough to fit on anyone's keyring or be in anyone's pocket. It has a hole for attaching it to things and another hole for blowing into. Don't get them mixed up or it wont whistle..

Its supposed to be an easy print.. just print it flat with no supports.. (it got kicked out of the parental home at an early age, so is used to being unsupported)

Print many.. give them to everyone you know.. they take about 15 mins to print and are a great way to use up those ends of spools of filament. They could save someone's life.